I am enthralled with the vortex stove. And am also wondering about ways of tweaking the secondary burn for the utmost efficiency. Seems to me that evoking a more deliberate heat riser with turbulent elbow could achieve that. So i have done up a sketch with the basic idea. (already thinking of better ways to introduce secondary air…)
Pat, this ressembles a bit Matt's angled riser, and there's a smidge of batch box too
My impression is that it could be done a bit more rocket'y style. As Vortex reduced the lengh of his box, may be doing a brick partition at the end of the firebox, with a port; this could be feasible. And then, that space would also act as the begining of the heat riser. Following that, you could do a broken riser. instead of the flat channel with the elbow. A broken riser angled to the front as this flat channel is, but also to the side, to increase the working lengh of this heat riser. Imagine the riser doing a diagonal from one corner to the other, seing the stove from the top.
Mind you, this is all theoretical.
There's one observation from the range retrofit tho, the firebox and port are one size smaller than the heat riser. Firebox loosely based on a 10cm batch, rather short. and the heat riser is 12cm diameter, real short compared to what it should be. May be 67cm iirc. But this thing roars with the 11m chimney above.
Pat, I would think something like this would be worth a try, sounds like Max is thinking along similar lines. Personally I like having the firebox exit at the front it makes for a good show, but I agree some kind of horizontal riser before the fire comes out under the griddle would be the way to go.
I remember viewing your forum post on the russian examples some time ago.
As the rocket batch boxes evolve towards masonry fire chambers… i am not surprised to see Russian examples.
In the heater i am currently building i decided to shape the fire box much the same as vortex has done, but with some trip wires and secondary air concentrated in to the throat. I wanted to make sure i can achieve the slow gasification burn that he can achieve when the primary air is closed. I am close to completion so we shall see.
I do wonder about the pros and cons of having the throat at the front or rear… It is hard to know when something is done just out of habit, or for a reason that no longer applies as variables shift…
Yes i have been thinking of how feeding the secondary air under the front lintel above the door could make for much heat. On the one hand i want the lintel to be hot so the air heats up. On the other, i do not want to thermally stress that piece. I have added fiberglass in sodium silicate to the outer front of it. ANd will add 1/8" ceramic felt to the underside of it (above the metal sleeve across the throat. Hopefully these will help achieve the desired secondary air heat and structural protection...
flybywire: Glass window from an old washing machine is designed to take high temps. Cheap solution to your need.
Jan 27, 2019 0:10:58 GMT -8
coastalrocketeer: Anyone posting in this shout box... if you have something you want people to see and respond to, create a thread in the appropriate forum section... this is not the place to have a discussion... it is for short announcements
Feb 7, 2019 0:11:23 GMT -8
coastalrocketeer: you won’t likely get replies to questions here, and it is not a spot that makes holding an ongoing discussion possible...
Feb 7, 2019 0:12:22 GMT -8
TexasGonzo: Sooooo glad I found this site! Its always rewarding to find such a super group of folks! To any and all, feel free to PM me anytime. Thanks for having me!
Mar 11, 2019 18:56:41 GMT -8
jlmtech: GADGET: CONSIDER USING A JET PUMP INSTEAD OF A BLOWER FAN TO INDUCE DRAFT; NO CLOGGING.
Mar 26, 2019 8:19:28 GMT -8
michaelegan: i am unable to open the sketchup files on my mac. I used sketchup a few years back but apparently the company now requires a subscription. does anyone have any advice/instructions on how to use the program or how to view pictures without spending money?
Aug 20, 2019 18:41:48 GMT -8
mannytheseacow: michaelegan: download AutoCAD student version for free... import .SKP
Aug 23, 2019 13:33:44 GMT -8
topbaza: hi everyone, been searching all over net and this is were i need to be i think!!
Sept 28, 2019 6:16:25 GMT -8
anounaki: Hi, why I cant upload photos when I make new tread to this forum?
Feb 28, 2020 2:09:40 GMT -8
ahansen: photos under 1 mb not possible?
Jun 4, 2020 0:09:21 GMT -8
belgiangulch: Photo's are possible. They must be downloaded elsewhere and the image url (adress) is copyied.
Sept 14, 2020 7:26:15 GMT -8
belgiangulch: While creating a thread click on the small picture in the banner above the reply. A box pops up, paste the image url in the box. Pay no attention to the huge list of numbers and such.When you finish and hit reply your post with pictures will come up.
Sept 14, 2020 7:29:27 GMT -8
deadstarsstillburn: Hi there. I was directed this way by folks on the Permies.com website and am hoping I can get some information on how a total newbie can get started designing, siting, building, and not-dying-in-a-horrible-house-fire with a new RMH in a 160-year old home
Oct 21, 2020 6:52:10 GMT -8
deadstarsstillburn: The people over there recommended either a 6" batchbox or an 8" J-tube. I don't know what those are but am going to try to figure that out. What I need is a blueprint that I can scale to fit the need for my house. I have something likne 5000 square feet
Oct 21, 2020 6:53:00 GMT -8
deadstarsstillburn: but I do not need to heat all of it by any means. probably only need to heat half of that, maybe less.
Oct 21, 2020 6:53:15 GMT -8
deadstarsstillburn: moreover, the house has 3 storeys (large attic) so I assume if I get very efficient heating on the ground floor, that will go a long way toward heating the upstairs as well, no?
Oct 21, 2020 6:53:59 GMT -8